(19)
(11) EP 2 575 277 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.04.2013 Bulletin 2013/17

(43) Date of publication A2:
03.04.2013 Bulletin 2013/14

(21) Application number: 12179190.9

(22) Date of filing: 03.08.2012
(51) International Patent Classification (IPC): 
H04J 14/02(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 30.09.2011 JP 2011218397

(71) Applicant: FUJITSU LIMITED
Kawasaki-shi, Kanagawa 211-8588 (JP)

(72) Inventors:
  • Kato, Tomoyuki
    Kanagawa, 211-8588 (JP)
  • Watanabe, Shigeki
    Kanagawa, 211-8588 (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Optical reception apparatus and optical network system


(57) An optical apparatus includes a dispersing medium configured to receive carrier light which has been subjected to phase modulation in accordance with subcarrier modulation signals which has been modulated using data signals, and an extracting means configured to extract the data signals from light output from the dispersing medium.







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